.sd-base-layout{
  // min-width: 1200px;
  .site-layout-background{
    background: #fafafa
  }
}
.backTopBox{
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: none;
  background-color: #fff;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  text-align: center;
  line-height: 40px;
  font-size: 18px;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
  z-index: 999;
}
